Sugar-free: <0.5 g/100 ml ready-to-drink product. Lactose-free: <0.1 g lactose/100 ml ready-to-drink product. Fat-free: <0.5 g/100 ml ready-to-drink product. A NEW, HIGH-FIBRE PROTEIN SOFT DRINK Our Iso Whey Zero Clear product has already demonstrated that its soft-drink-like consistency and refreshing flavour provide a viable alternative to creamy protein shakes.